Allow a single trybot to mirror multiple waterfall bots.

scripts/slave/recipes/findit/chromium/test.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import json
 
 from recipe_engine.config import Dict
 from recipe_engine.recipe_api import Property
 
 
@@ skipping 46 matching lines @@
   FAILED = 'failed'  # The compile or test failed.
 
 
 def _compile_and_test_at_revision(api, target_mastername, target_buildername,
                                   target_testername, revision, requested_tests):
   results = {}
   with api.step.nest('test %s' % str(revision)):
     # Checkout code at the given revision to recompile.
     bot_update_step, bot_db = \
         api.chromium_tests.prepare_checkout(
-            target_mastername,
-            target_buildername,
+            api.chromium_tests.create_bot_desc(
+                target_mastername, target_buildername),
             root_solution_revision=revision)
 
     # Figure out which test steps to run.
     all_tests = api.chromium_tests.tests_for_builder(
         target_mastername,
         target_testername,  # If not tester, this is same as target_buildername.
         bot_update_step,
         bot_db,
         override_bot_type='builder_tester')
 
@@ skipping 58 matching lines @@
   assert requested_tests, 'No failed tests were specified.'
 
   # Figure out which builder configuration we should match for compile config.
   # Sometimes, the builder itself runs the tests and there is no tester. In
   # such cases, just treat the builder as a "tester". Thus, we default to
   # the target tester.
   tester_config = api.chromium_tests.builders.get(
       target_mastername).get('builders', {}).get(target_testername)
   target_buildername = (tester_config.get('parent_buildername') or
                         target_testername)
+  bot_desc = api.chromium_tests.create_bot_desc(
+      target_mastername, target_buildername)
 
   # Configure to match the compile config on the builder.
   api.chromium_tests.configure_build(
-      target_mastername, target_buildername, override_bot_type='builder_tester')
+      bot_desc, override_bot_type='builder_tester')
 
   # Configure to match the test config on the tester, as builders don't have the
   # settings for swarming tests.
   if target_buildername != target_testername:
     for key, value in tester_config.get('swarming_dimensions', {}).iteritems():
       api.swarming.set_default_dimension(key, value)
   # TODO(stgao): Fix the issue that precommit=False adds the tag 'purpose:CI'.
   api.chromium_tests.configure_swarming('chromium', precommit=False)
 
   # Sync to bad revision, and retrieve revisions in the regression range.
   api.chromium_tests.prepare_checkout(
-      target_mastername, target_buildername,
+      bot_desc,
       root_solution_revision=bad_revision)
   revisions_to_check = api.findit.revisions_between(good_revision, bad_revision)
 
   results = {}
 
   try:
     # We compile & run tests from the first revision to the last revision in the
     # regression range serially instead of a typical bisecting, because jumping
     # between new and old revisions might affect Goma capacity and build cycle
     # times. Thus we plan to go with this simple serial approach first so that
@@ skipping 158 matching lines @@
               ],
           },
       })) +
       api.override_step_data(
           'test r1.gl_tests (r1)',
           simulated_gtest_output(
               failed_test_names=['Test.One', 'Test.Two'],
               passed_test_names=['Test.Three'])
       )
   )